CN212612350U - Ecological flow facility for releasing by utilizing temporary construction branch tunnel of built hydropower station - Google Patents
Ecological flow facility for releasing by utilizing temporary construction branch tunnel of built hydropower station Download PDFInfo
- Publication number
- CN212612350U CN212612350U CN202021215540.9U CN202021215540U CN212612350U CN 212612350 U CN212612350 U CN 212612350U CN 202021215540 U CN202021215540 U CN 202021215540U CN 212612350 U CN212612350 U CN 212612350U
- Authority
- CN
- China
- Prior art keywords
- steel pipe
- ecological flow
- pressure steel
- construction branch
- facility
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The utility model discloses an ecological flow discharge facility by utilizing a temporary construction branch tunnel of a built hydropower station, which comprises the built construction branch tunnel, a pressure steel pipe, an electric gate valve, an electric cone valve and a stilling pool; the pressure steel pipe is arranged in the constructed branch tunnel; the pressure steel pipe extends out of the built construction branch tunnel and is connected to the stilling pool; the electric gate valve is arranged in the middle of the pressure steel pipe and is used as an access door; the electric conical valve is arranged at the water outlet end of the pressure steel pipe; the utility model discloses the technical scheme who takes transfers under the measure condition at no effectual ecological flow, utilizes the interim construction branch tunnel of diversion power generation tunnel to solve its ecological flow and transfer the problem.
Description
Technical Field
The utility model relates to a power station ecological environment protection field technical field, concretely relates to utilize built power station temporary construction branch tunnel to discharge ecological flow facility.
Background
Hydroelectric power generation is used as a clean energy source, and hydropower station engineering has irreplaceable functions in the aspects of power supply, water supply safety and the like. At present, the influence and the protection measures of hydropower station engineering in China on downstream ecological environment are greatly concerned by society, especially most of hydropower stations built in early are not provided with ecological flow discharge measures, even a plurality of hydropower stations cannot open low-level discharge facilities due to sediment accumulation, so that the phenomenon of obviously reducing and dewatering of downstream watercourses in the operation process is caused, and the negative influence on the downstream water ecology and the water environment is large. In recent years, the successive export of relevant documents by environmental protection and water conservancy related ministries at all levels of the country requires implementation of measures for guaranteeing ecological traffic drainage.
The existing hydropower station ecological flow discharge mode generally comprises a flood discharge (flood overflow) way, a blow-down hole, small-opening operation of a gate, drilling a hole in a dam, installing a pipeline, forming a hole in the original gate and the like. The following problems exist in various discharge modes, namely a small-opening operation mode of a gate: vibration is caused when the small-opening gate is operated for a long time, and the water seal at the bottom of the gate is easily damaged when the small-opening gate is frequently opened, so that the engineering safety influence is large; the dam is drilled with a pipeline and holes are formed in the gate, the holes are mainly formed in the dam body and the gate, and the safety of the dam body of the dam is greatly affected; the general inlet bottom plate of the flood discharge (overflow) way has higher elevation, and water can not be taken to ensure that ecological flow is discharged when the water level of a reservoir of a power station is lower; the entrance of the emptying hole is often positioned at the bottom of the reservoir, the reservoir operates less in ordinary years, and the silt deposits in the reservoir after long-term operation often lead to the fact that a water inlet gate of the emptying hole cannot be opened, so that the emptying hole cannot be lifted after the reservoir built for many years does not need the emptying hole for a long time. The conventional and commonly-used ecological flow discharging facilities of power stations built for many years generally have one or more problems, so that the ecological flow cannot be discharged safely and effectively, the water in a downstream river channel is reduced, and the ecological and water environment of the downstream water are obviously adversely affected.
In order to meet the requirements of environmental protection inspection and supervision at present, for hydropower station projects which are built for many years and take power generation as a single purpose, how to solve the problem of safe and reliable ecological flow transfer without effective ecological flow transfer measures is one of the key technical problems which need to be solved urgently by each power station operation unit. The ecological flow is a flow process within one year which is comprehensively determined according to the requirements of downstream aquatic ecology and water environment so as to meet the water quantity requirements of downstream environmental protection targets in different time periods, and the ecological flow discharge facility is safe, controllable, continuous and reliable. Therefore, it is necessary to develop research on ecological flow discharge facilities for hydropower stations which have been built for many years without effective ecological flow discharge measures, and to break through the unconventional way to invent a facility capable of safely, controllably and continuously and stably discharging ecological flow.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an utilize and built power station temporary construction branch tunnel to release ecological flow facility, under the measure condition is transferred to no effectual ecological flow, utilize the temporary construction branch tunnel of diversion power generation tunnel to solve its ecological flow and transfer the problem.
In order to solve the technical problem, the utility model adopts the following technical scheme: a facility for releasing ecological flow by utilizing a temporary construction branch tunnel of a built hydropower station comprises the built construction branch tunnel, a pressure steel pipe, an electric gate valve, an electric cone valve and a stilling basin; the pressure steel pipe is arranged in the constructed branch tunnel; the pressure steel pipe extends out of the built construction branch tunnel and is connected to the stilling pool; the electric gate valve is arranged in the middle of the pressure steel pipe and is used as an access door; the electric conical valve is arranged at the water outlet end of the pressure steel pipe;
furthermore, an ultrasonic flowmeter is arranged behind the electric cone valve;
furthermore, the pressure steel pipe is provided with a ballast block;
further, the electric cone valve is provided with a buttress; the buttress is fixed by a foundation bolt;
further, the flow rate of the electric cone valve is 0-10.5 m 3/s;
further, the length of the stilling pool is 15-20 m; the width is 2-8 m; the height is 5-10 m; the end part of the stilling pool is connected with a river channel below the dam;
the further technical proposal is that the length of the stilling pool is 17 m; the width is 5 m; the height is 6 m.
Compared with the prior art, the beneficial effects of the utility model are one of following at least:
1. opening a temporary construction branch tunnel of the blocked diversion power generation tunnel, and arranging a pressure steel pipe in the tunnel to transfer ecological flow, so that the ecological flow can be safely, controllably and continuously and stably discharged under the condition that no effective ecological flow transfer measure exists in the built power station for many years;
2. the facility can electrically control the conical valve to discharge different flow according to the annual ecological flow process required by the environmental protection department, the facility is safe and reliable, the discharge flow can meet the design requirement, and the facility can better serve engineering design and engineering operation. The ecological flow discharge requirements in different time periods can be accurately controlled, so that the ecological flow discharge control device can play an important role in protecting the ecological environment of the downstream riverway of the dam;
3. the operation is safe, controllable, continuous and reliable, the safety of dam bodies and the safety of operators are ensured, the gates can be remotely controlled, and the facility operation control is relatively flexible.
Drawings
FIG. 1 is an elevation view of an ecological flow relief facility.
Fig. 2 is a cross-sectional view of an ecological flow relief facility.
FIG. 3 is an elevational view of an outlet portion of the ecological flow discharge facility.
In the drawings: 1. constructing a branch tunnel; 2. a pressure steel pipe; 3. an electric gate valve; 4. an electrically operated conical valve; 5. a stilling pool; 6. carrying out pier rolling; 7. buttress; 8. an ultrasonic flow meter.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1: as shown in fig. 1 to 3, the facility for releasing ecological flow by using temporary construction branch holes of established hydropower stations comprises an established construction branch hole 1, a pressure steel pipe 2, an electric gate valve 3, an electric cone valve 4 and a stilling pool 5; the pressure steel pipe 2 is arranged in the constructed branch tunnel 1; the pressure steel pipe 2 extends out of the built construction branch hole 1 and is connected to a stilling pool 5; the electric gate valve 3 is arranged in the middle of the pressure steel pipe 2 and serves as an access door; the electric conical valve 4 is arranged at the water outlet end of the pressure steel pipe 2; in the embodiment, the total length of the pressure steel pipe 2 is 516m, wherein the length inside a construction branch hole is 406m, the length outside the hole is about 110m, the diameter is 1.6m, the designed maximum flow velocity is 5.15m/s, and the pipe wall thickness is 16 mm. 630 anchor blocks are arranged on the penstock 2, and the penstock is of a C20 concrete structure; in this embodiment, the nominal pressure DN1600 and the nominal diameter pn1.6mpa of the electric gate valve 3.
And (3) reopening a plug of the temporary construction branch hole of the blocked water diversion power generation tunnel, and adopting C25 reinforced concrete full-section lining with the lining thickness of 40cm to ensure that the temporary construction branch hole meets the requirement of a permanent building. Arranging a pressure steel pipe 2 in the lined construction branch tunnel to take water from the diversion power generation tunnel and drain down ecological flow; the electric gate valve 3 is arranged in the pipeline of the pressure steel pipe 2 and is used as an overhaul valve; the electric cone valve 4 is arranged at the tail end of the pressure steel pipe 2 pipeline, can safely and reliably regulate the discharge flow and has the energy dissipation effect.
Opening a temporary construction branch tunnel of the blocked diversion power generation tunnel, and arranging a pressure steel pipe 2 in the tunnel to transfer ecological flow, so that the ecological flow can be safely, controllably and continuously and stably discharged under the condition that no effective ecological flow transfer measure exists in the built power station for many years; the facility can electrically control the conical valve to discharge different flow according to the annual ecological flow process required by the environmental protection department, the facility is safe and reliable, the discharge flow can meet the design requirement, and the facility can better serve engineering design and engineering operation. The ecological flow discharge requirements in different time periods can be accurately controlled, so that the ecological flow discharge control device can play an important role in protecting the ecological environment of the downstream riverway of the dam; the operation is safe, controllable, continuous and reliable, the safety of dam bodies and the safety of operators are ensured, the gates can be remotely controlled, and the facility operation control is relatively flexible.
An ultrasonic flowmeter 8 is arranged behind the electric cone valve 4; the ultrasonic flowmeter 8 is used for monitoring the size of the discharged ecological flow; in this embodiment, 1 set of SULN-200F ultrasonic flow meter 8 is provided behind the conical valve.
The pressure steel pipe 2 is provided with a ballast block 6; the anchor blocks 6 are mainly used for fixing the pressure steel pipes 2 arranged outside the construction branch tunnel and the electric cone valves 4 at the outlet.
The electric conical valve 4 is provided with a buttress 7; the buttress 7 is fixed by foundation bolts; the electric conical valve 4 is provided with the buttress 7, is fixed by the foundation bolts, can safely and reliably regulate the discharge flow and has the energy dissipation effect.
The flow rate of the electric cone valve 4 is 0-10.5 m 3/s;
the length of the stilling pool 5 is 15-20 m; the width is 2-8 m; the height is 5-10 m; the end part of the stilling pool 5 is connected with a river channel below the dam;
the length of the stilling pool 5 is 17 m; the width is 5 m; the height is 6 m; the absorption basin 5 is positioned at the downstream of the outlet of the pressure steel pipe 2 and mainly plays a role in energy dissipation and scour prevention of effluent, and tail water at the tail end of the absorption basin 5 is connected with a downstream river channel of a dam.
Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.
Claims (7)
1. The utility model provides an utilize power station temporary construction branch hole ecological flow facility of releasing which characterized in that: comprises a built construction branch tunnel (1), a pressure steel pipe (2), an electric gate valve (3), an electric cone valve (4) and a stilling basin (5); the pressure steel pipe (2) is arranged in the constructed branch tunnel (1); the pressure steel pipe (2) extends out of the built construction branch hole (1) and is connected to a stilling pool (5); the electric gate valve (3) is arranged in the middle of the pressure steel pipe (2) and is used as an access door; the electric conical valve (4) is arranged at the water outlet end of the pressure steel pipe (2).
2. The facility for releasing ecological flow by using temporary construction branch tunnels of established hydropower stations as claimed in claim 1, wherein: an ultrasonic flowmeter (8) is arranged behind the electric cone valve (4).
3. The facility for releasing ecological flow by using temporary construction branch tunnels of established hydropower stations as claimed in claim 1, wherein: the pressure steel pipe (2) is provided with a ballast block (6).
4. The facility for releasing ecological flow by using temporary construction branch tunnels of established hydropower stations as claimed in claim 1, wherein: the electric conical valve (4) is provided with a buttress (7); the buttress (7) is fixed by foundation bolts.
5. The facility for releasing ecological flow by using temporary construction branch tunnels of established hydropower stations as claimed in claim 1, wherein: the flow of the electric conical valve (4) is 0-10.5 m3/s。
6. The facility for releasing ecological flow by using temporary construction branch tunnels of established hydropower stations as claimed in claim 1, wherein: the length of the stilling pool (5) is 15-20 m; the width is 2-8 m; the height is 5-10 m; the end part of the stilling pool (5) is connected with a river channel below the dam.
7. The facility for releasing ecological flow by using temporary construction branch tunnels of established hydropower stations as claimed in claim 6, wherein: the length of the stilling pool (5) is 17 m; the width is 5 m; the height is 6 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021215540.9U CN212612350U (en) | 2020-06-28 | 2020-06-28 | Ecological flow facility for releasing by utilizing temporary construction branch tunnel of built hydropower station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021215540.9U CN212612350U (en) | 2020-06-28 | 2020-06-28 | Ecological flow facility for releasing by utilizing temporary construction branch tunnel of built hydropower station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212612350U true CN212612350U (en) | 2021-02-26 |
Family
ID=74743107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021215540.9U Active CN212612350U (en) | 2020-06-28 | 2020-06-28 | Ecological flow facility for releasing by utilizing temporary construction branch tunnel of built hydropower station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212612350U (en) |
-
2020
- 2020-06-28 CN CN202021215540.9U patent/CN212612350U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108130886B (en) | Power generation breakwater | |
| CN207567736U (en) | Silt arrester water storage intelligence delayed release device | |
| CN204343257U (en) | The rubber dam of the wear-resistant steel plate of a kind of autocontrol band | |
| CN205421519U (en) | Automatically controlled current limiting type wisdom vatch basin with overflow grid | |
| CN212612350U (en) | Ecological flow facility for releasing by utilizing temporary construction branch tunnel of built hydropower station | |
| CN205296100U (en) | Husky equipment is arranged in reservoir segmentation | |
| CN204626349U (en) | Gate of hydropower station top Accrete clearing device | |
| CN206889716U (en) | A kind of angle type balancing valve of underground water conduit motor control automatic shutter | |
| CN105804223A (en) | Intelligent anti-backward-flowing intercepting well with slag blocking function and electric-control flow-limiting function | |
| CN211172272U (en) | System for flushing and shunting municipal sewage pipe | |
| CN108677894B (en) | Power generation system utilizing pipeline type karst groundwater and design method | |
| US10876265B2 (en) | Modular hydropower unit | |
| CN206752427U (en) | A kind of power station ground power house tailrace outlet structure and its power station | |
| CN202718071U (en) | Barrage structure capable of lowering silt of reservoir area | |
| CN204982820U (en) | A lock chamber arrangement structure that is used for high arch dam water conservancy diversion bottom outlet | |
| CN204543668U (en) | One under water gas rushes soil discharging facility | |
| CN209760189U (en) | Silt-back prevention facility for drainage box culvert | |
| CN201933470U (en) | Drainpipe device for dam | |
| CN208088251U (en) | Ecological flow discharge structure during lower lock water storage | |
| CN215857561U (en) | Initial ecological water structure for water storage by downward delivery of buried pipe of diversion tunnel | |
| CN106988400A (en) | It is a kind of keep off it is damp, anti-blocking, maintenance it is convenient, can sand washing desilting hondo formula closure works system and method | |
| CN202265807U (en) | Gate chamber of building for flow guide and drainage | |
| CN207109987U (en) | A kind of hondo formula closure works system | |
| CN215289997U (en) | Dam drainpipe circular gate water retaining structure | |
| CN215715112U (en) | Arrangement structure for reducing height of pressure regulating tower |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |